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#1 Ноя. 22, 2014 14:22:36

remoshka
Зарегистрирован: 2014-10-11
Сообщения: 44
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Помогите с примером:)

Опять пример из книги по питон3 не заводится

# создаем файл данных инцидентов
# report_id = str max 8
# date = datetime.date
# airport = str непустое, без символов перевода строки
# aircraft_id = str непустое без символов перевода строки
# aircraft_type = str непустое, без символов перевода строки
# pilot_percent_hours_on_type = float в диапазоне от 0.0 до 100.0
# pilot_total_hours = int положительное ненулевое значение
# midair = bool
# narrative = str многострочный текст
import os
import sys
import datetime
import textwrap



class IncidentError(Exception): pass


class IncidentCollection(dict):

    def values(self):
	for report_id in self.keys():
	    yield self[report_id]


    def items(self):
	for report_id in self.keys():
	    yield (report_id, self[report_id])


    def __iter__(self):
	for report_id in sorted(super(IncidentCollection, self).keys()):
	    yield report_id
    keys = __iter__


    def export_text(self, filename):
	wrapper = textwrap.TextWrapper(initial_indent="    ",
				       subsequent_indent="    ")
	fh = None
	try:
	    fh = open(filename, "w")
	    for incident in self.values():
		narrative = "\n".join(wrapper.wrap(
				   incident.narrative.strip()))
		fh.write("[{0.report_id}]\n"
			 "date={0.date!s}\n"
			 "aircraft_id={0.aircraft_id}\n"
			 "aircraft_type={0.aircraft_type}\n"
			 "airport={airport}\n"
			 "pilot_percent_hours_on_type="
			 "{0.pilot_percent_hours_on_type}\n"
			 "pilot_total_hours={0.pilot_total_hours}\n"
			 "midair={0.midair:d}\n"
			 ".NARRATIVE_START.\n{narrative}\n"
			 ".NARRATIVE_END.\n\n".format(incident,
		    airport=incident.airport.strip(),
		    narrative=narrative))
	    return True
	except EnvironmentError as err:
	    print("{0}: export error: {1}".format(
		  os.path.basename(sys.argv[0]), err))
	    return False
	finally:
	    if fh is not None:
		fh.close()


class Incident(object):

    def __init__(self, report_id, date, airport, aircraft_id, aircraft_type,
	    pilot_percent_hours_on_type, pilot_total_hours, midair,
	    narrative=""):
	assert len(report_id) >= 8 and len(report_id.split()) == 1,\
		"invalid report ID"
	self.__report_id = report_id
	self.date = date
	self.airport = airport
	self.aircraft_id = aircraft_id
	self.aircraft_type = aircraft_type
	self.pilot_percent_hours_on_type = pilot_percent_hours_on_type
	self.pilot_total_hours = pilot_total_hours
	self.midair = midair
	self.narrative = narrative


    @property
    def date(self):
	return self.__date


    @date.setter
    def date(self, date):
	assert isinstance(date, datetime.date), "invalid date"
	self.__date = date


# заполняем коллекцию IncidentCollection данными
a = IncidentCollection(report_id='00000001',\
	date=datetime.date(2007, 6, 12),
	airport='USA airport', aircraft_id="bebebe",
	Aircraft_type="LEGAL", pilot_percent_hours_on_type="pilot_percent_hours_on_type 12%",
	pilot_total_hours="pilot_total_hours 1200", midair=True, narrative="sdasasdsa asdasdasdas\nfewfewfwefwefwefewfddsf")

a.export_text("/home/user/123.txt")

выхлоп:
Press ENTER or type command to continue
Traceback (most recent call last):
  File "python.sh", line 3932, in <module>
    a.export_text("/home/user/123.txt")
  File "python.sh", line 3837, in export_text
    incident.narrative.strip()))
AttributeError: 'str' object has no attribute 'narrative'
shell returned 1

Отредактировано remoshka (Ноя. 22, 2014 14:23:14)

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#2 Ноя. 22, 2014 19:20:21

Alen
Зарегистрирован: 2013-08-01
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Помогите с примером:)

Здесь Вы выдаете ключи словаря, являющимися строками, по одному

   def values(self):
	for report_id in self.keys():
	    yield self[report_id]

Здесь Вы перебираете все строки, возращаемые из метода values, и пытаетесь вызвать у строк метод narrative, которого у срок попросту нет, о чём Вам и сигнализирует Traceback.

for incident in self.values():
		narrative = "\n".join(wrapper.wrap(
				   incident.narrative.strip()))

Ищите ошибку, в этих двух фрагментах.

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#3 Ноя. 22, 2014 19:43:27

remoshka
Зарегистрирован: 2014-10-11
Сообщения: 44
Репутация: +  0  -
Профиль  

Помогите с примером:)

# создаем файл данных инцидентов
# report_id = str max 8
# date = datetime.date
# airport = str непустое, без символов перевода строки
# aircraft_id = str непустое без символов перевода строки
# aircraft_type = str непустое, без символов перевода строки
# pilot_percent_hours_on_type = float в диапазоне от 0.0 до 100.0
# pilot_total_hours = int положительное ненулевое значение
# midair = bool
# narrative = str многострочный текст
import os
import sys
import datetime
import textwrap



class IncidentError(Exception): pass


class Incident(object):

    def __init__(self, report_id, date, airport, aircraft_id, aircraft_type,
            pilot_percent_hours_on_type, pilot_total_hours, midair,
            narrative=""):
        assert len(report_id) >= 8 and len(report_id.split()) == 1,\
                "invalid report ID"
        self.__report_id = report_id
        self.date = date
        self.airport = airport
        self.aircraft_id = aircraft_id
        self.aircraft_type = aircraft_type
        self.pilot_percent_hours_on_type = pilot_percent_hours_on_type
        self.pilot_total_hours = pilot_total_hours
        self.midair = midair
        self.narrative = narrative


    @property
    def date(self):
        return self.__date


    @date.setter
    def date(self, date):
        assert isinstance(date, datetime.date), "invalid date"
        self.__date = date

    @property
    def midair(self):
        "Whether the incident involved another aircraft"
        return self.__midair

    @midair.setter
    def midair(self, value):
        assert isinstance(value, bool), "invalid midair value"
        self.__midair = value


    @property
    def airport(self):
        "The incident's airport"
        return self.__airport

    @airport.setter
    def airport(self, airport):
        assert airport and "\n" not in airport, "invalid airport"
        self.__airport = airport


    @property
    def aircraft_id(self):
        "The aircraft ID"
        return self.__aircraft_id

    @aircraft_id.setter
    def aircraft_id(self, aircraft_id):
        assert aircraft_id and "\n" not in aircraft_id, \
               "invalid aircraft ID"
        self.__aircraft_id = aircraft_id


    @property
    def aircraft_type(self):
        "The aircraft type"
        return self.__aircraft_type

    @aircraft_type.setter
    def aircraft_type(self, aircraft_type):
        assert aircraft_type and "\n" not in aircraft_type, \
               "invalid aircraft type"
        self.__aircraft_type = aircraft_type


    @property
    def narrative(self):
        "The incident's narrative"
        return self.__narrative

    @narrative.setter
    def narrative(self, narrative):
        self.__narrative = narrative

class IncidentCollection(dict):

    def values(self):
        for report_id in self.keys():
            yield self[report_id]


    def items(self):
        for report_id in self.keys():
            yield (report_id, self[report_id])


    def __iter__(self):
        for report_id in sorted(super(IncidentCollection, self).keys()):
            yield report_id

    keys = __iter__


    def __reversed__(self):
        for report_id in sorted(super().keys(), reverse=True):
            yield report_id


    def export_text(self, filename):
        wrapper = textwrap.TextWrapper(initial_indent="    ", subsequent_indent="    ")
        fh = None
        try:

            if(os.path.exists(filename)):
                os.remove(filename)
            fh = open(filename, "w")

            narrative = "\n".join(wrapper.wrap(self['narrative'].strip()))
            fh.write("[{report_id}]\n"
                    "date={date!s}\n"
                    "aircraft_id={aircraft_id}\n"
                    "aircraft_type={aircraft_type}\n"
                    "airport={airport}\n"
                    "pilot_percent_hours_on_type={pilot_percent_hours_on_type}\n"
                    "pilot_total_hours={pilot_total_hours}\n"
                    "midair={midair}\n"
                    ".NARRATIVE_START\n{narrative}\n.NARRATIVE_END\n\n".format(
                        report_id=self['report_id'],date=self['date'],narrative=narrative,
                        aircraft_id=self['aircraft_id'], aircraft_type=self['aircraft_type'],
                        airport=self['airport'], pilot_percent_hours_on_type=self['pilot_percent_hours_on_type'],
                        pilot_total_hours=self['pilot_total_hours'], midair=self['midair']))

            return True
        except EnvironmentError as err:
            print("{0}: export error: {1}".format(
                  os.path.basename(sys.argv[0]), err))
            return False
        finally:
            if fh is not None:
                fh.close()


# заполняем коллекцию IncidentCollection данными
a = IncidentCollection(report_id='00000001',\
        date=datetime.date(2007, 6, 12),
        airport='USA airport', aircraft_id="bebebe",
        aircraft_type="LEGAL", pilot_percent_hours_on_type="pilot_percent_hours_on_type 11%",
        pilot_total_hours="pilot_total_hours 1200", midair=True, narrative="sdasasdsa asdasdasdas\nfewfewfwefwefwefewfddsf")

b = IncidentCollection(report_id='00000002',\
        date=datetime.date(2007, 6, 12),
        airport='USA airport', aircraft_id="bebebe",
        aircraft_type="LEGAL", pilot_percent_hours_on_type="pilot_percent_hours_on_type 12%",
        pilot_total_hours="pilot_total_hours 1200", midair=True, narrative="sdasasdsa asdasdasdas\nfewfewfwefwefwefewfddsf")

a.export_text("/home/user/{report_id}.txt".format(report_id=a['report_id']))

Но как бы так универсилизировать вот этот участок кода, чтобы при добавлении аттрибутов в Incident не менять этот кусок кода ?
 narrative = "\n".join(wrapper.wrap(self['narrative'].strip()))
            fh.write("[{report_id}]\n"
                    "date={date!s}\n"
                    "aircraft_id={aircraft_id}\n"
                    "aircraft_type={aircraft_type}\n"
                    "airport={airport}\n"
                    "pilot_percent_hours_on_type={pilot_percent_hours_on_type}\n"
                    "pilot_total_hours={pilot_total_hours}\n"
                    "midair={midair}\n"
                    ".NARRATIVE_START\n{narrative}\n.NARRATIVE_END\n\n".format(
                        report_id=self['report_id'],date=self['date'],narrative=narrative,
                        aircraft_id=self['aircraft_id'], aircraft_type=self['aircraft_type'],
                        airport=self['airport'], pilot_percent_hours_on_type=self['pilot_percent_hours_on_type'],
                        pilot_total_hours=self['pilot_total_hours'], midair=self['midair']))

Отредактировано remoshka (Ноя. 22, 2014 19:43:48)

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